hi and welcome to pc.
I am sorry you have been treated so badly by some women. that very well could be why you have lost your desire. mistrust is a terrible thing. I hope you realize though that not all women are like that. some are very devoted to the men they are with. same as men. there is good and bad in both sexes. I think once you find the right one you will find that desire again. maybe seek some counseling also about the feelings you have for women. I suspect it may go deeper than one woman cheating on you. don't allow 1 or 2 women to ruin your life hon.